linux-kernel - Re: [PATCH 2/5] nds32: Fix bug in bitfield.h

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Date:   Mon, 22 Oct 2018 18:19:25 +0800
From:   Nick Hu <nickhu@...estech.com>
To:     Mark Rutland <mark.rutland@....com>
CC:     Greentime Ying-Han Hu(胡英漢) 
        <greentime@...estech.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
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Subject: Re: [PATCH 2/5] nds32: Fix bug in bitfield.h

Hi Mark,

On Thu, Oct 18, 2018 at 10:26:31PM +0800, Mark Rutland wrote:
> On Thu, Oct 18, 2018 at 04:43:14PM +0800, Nickhu wrote:
> > There two bitfield bug for perfomance counter
> > in bitfield.h:
> > 
> > 	PFM_CTL_offSEL1		21 --> 16
> > 	PFM_CTL_offSEL2		27 --> 22
> > 
> > This commit fix it.
> > 
> > Signed-off-by: Nickhu <nickhu@...estech.com>
> 
> This patch should probably be move before the patch adding perf support.
> That way, perf support isn't broken at the point it is added.
> 
> Thanks,
> Mark.
> 
> > ---
> >  arch/nds32/include/asm/bitfield.h | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/arch/nds32/include/asm/bitfield.h b/arch/nds32/include/asm/bitfield.h
> > index 8e84fc385b94..19b2841219ad 100644
> > --- a/arch/nds32/include/asm/bitfield.h
> > +++ b/arch/nds32/include/asm/bitfield.h
> > @@ -692,8 +692,8 @@
> >  #define PFM_CTL_offKU1		13	/* Enable user mode event counting for PFMC1 */
> >  #define PFM_CTL_offKU2		14	/* Enable user mode event counting for PFMC2 */
> >  #define PFM_CTL_offSEL0		15	/* The event selection for PFMC0 */
> > -#define PFM_CTL_offSEL1		21	/* The event selection for PFMC1 */
> > -#define PFM_CTL_offSEL2		27	/* The event selection for PFMC2 */
> > +#define PFM_CTL_offSEL1		16	/* The event selection for PFMC1 */
> > +#define PFM_CTL_offSEL2		22	/* The event selection for PFMC2 */
> >  /* bit 28:31 reserved */
> >  
> >  #define PFM_CTL_mskEN0		( 0x01  << PFM_CTL_offEN0 )
> > -- 
> > 2.17.0
> >

Thank you for the advice !!
I will prepare another patch for it.